[PATCH v3] fbdev: ignore VESA modes if framebuffer does not support them

Currently, it is possible to set a graphics VESA mode at boot time viathe vga= parameter even when no framebuffer driver supporting this isconfigured. This could lead to the system booting with a black screen,without a usable console.

Fix this problem by only allowing to set graphics modes at boot timeif a supporting framebuffer driver is configured.

Signed-off-by: Michal Januszewski <spock@gentoo.org>Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>---This version of the patch replaces the FB_SUPPORTS_BOOT_VESA macro fromscreen-info.h with a config option in drivers/video/Kconfig.